Pneumatic sweeper.



i ers for Use inCleaningfh articles.

UNITED STATES PATENT OFFICE.

SIEGFRIED BUDER, OF HALENSEE, NEAR BERLIN,` GERMANY.

PNUMATIC SWEEPER.

Specification of Letters Patent.

Patented J' uly 16, 1907. I

. l .pplicationled October 10, 1905. Serial No. 282,107.

new and. useful Improvements in Pneumatic Sweeping is a specication. l v

This invention relatesto vacuum cleaning apparatus in which the suctionnozzle yis combined withabrush for agitating the dust, etc. This classof apparatus are used for cleaning carpets and carved and upholsteredfurniture. In-apparatus inwhich only suction nozzles are employed, thespeed of the drawing-in air current is frequently -insuicient forreleasing the dust and other matter ytenaciously adhering to soft androughed In the drawings forming a part of this specification is shown apneumatic sweeper constructed in accordance with the 'presentimprovement and in which Figure 1 is a longitudinal section taken `onthe line A-B of Fig. 2. Fig. 2 is a cross section; and Fig. 3 is alongitudinal section taken on the line C-D of Fig. 2. The suction nozzleis designated by l, the side walls 3 of which project somewhat beyond4the front wall of the bot-tom opening 2. These side Walls prevent theexcessive depression of the nozzle opening. so that there is always aspace between the object being cleaned and the nozzle for the passage ofthe agitated dust, etc. The suction member is provided .withia dependingplate 4 serving as a support for a brush 5 having short andcomparatively rigid bristles. A stud 7 is secured to the wall 4 by meansof a thumb nut -6, and is provided with an aperture through which passesa bail 8, whose bent end portions 9 project into groove 7 in oppositeends of the stock of the brush 5. The coil springll on the' bail 8yieldably retains the brush in its loweryuctiomof which the follow mostposition with thebr/igtles extending below the nozi zle 1.

This improved sweeping or cleaning device is adapted to be operated inthe direction of the arrow (Fig. 2) 40 that is to say the nozzle l is infront of the brush and pressureis exerted on the bristles as required,such pressure tending to raise the arms together with the brush. u

The greater the pressure exerted, the smaller becomes the distancebetween the nozzle opening 2 and the article or object being cleaned;that is to say the greater 4becomes the speed of the air which is beingdrawn in together with the dust thrown under the nozzle opening 2 by thebrush by means of a suction pipe 12 connected to the -nozzle.

Having thus described my'invention, I claim:

1. In u device of the character described, the combination of a body, :inozzle whose side Walls project below the front and rear walls, a brushyieldably supported in the body 'at the rear of the nozzle and extendingbelow the same to exert u downward pressure.

2. In a device of the character described, the combination of. a body,s. nozzle, a brush, a buil supporting the brush, and a spring connectedwith the bail to press the brush downward adjacent the nozzle.

3. In n device of the character described, the combination of a' hollowbody, a nozzle nt the front of the body,` a stud removably secured tothe rear Wall of the body and lying between the nozzle and rear wall, abail pivotally carried by the stud, a brush supported von the ball andslidable vertically between the nozzle und the rear wall, and n collspring on the ball arranged to swing the bail to press the brushdownward.

In testimony whereof I have hereunto set my hand in the presence of theundersigned witnesses, at Berl-in, Germany, this 27th day of September,1905.

SIEGFRIED BUDER. Witnesses HENRY HASPER, WOLDEMAR HAUPT.

